Table of Contents(Page CI-17)

COMMERCIAL/INDUSTRIAL PRODUCT INFORMATION

SECTION PROPERTIES

PANEL
GAUGE

Fy
(KSI)

WEIGHT
(PSF)

TOP FLAT IN COMPRESSION

BOTTOM FLAT IN COMPRESSION

Ix
(in.4/ft.)

 Sx
(in. 3/ft.)		 Ma
(in. Kip)

Ix
(in.4/ft.)

 Sx
(in. 3/ft.)		 Ma
(in. Kip)

22

45

1.73

0.1485

 0.1757 4.7400

0.1799

 0.1827 4.9200

20

45

2.09

0.1849

 0.2250 6.0600

0.2144

 0.2267 6.1100

18

45

2.75

 0.2654 0.3416 9.2000 0.2871 0.3116 8.4000

NOTES

  1. All calculations for the properties of panels are calculated in accordance with the 1986 edition of Specifications for the Design of Light Gauge Cold Formed Steel Structural Members - published by the American Iron and Steel Institute (A.I.S.l.).
  2. Ix is for deflection determination.
  3. Sx is for bending.
  4. Ma is allowable bending moment.
  5. All values are for one foot of panel width.

 

ALLOWABLE UNIFORM LIVE LOADS IN POUNDS PER SQUARE FOOT
   

22 Gauge (Fy = 45 KSI)

20 Gauge (Fy = 45 KSI)

SPAN
TYPE

LOAD
TYPE

SPAN IN FEET

SPAN IN FEET
3.0 4.0 5.0 6.0 7.0 8.0 3.0 4.0 5.0 6.0 7.0 8.0

SIMPLE

 NEGATIVE WIND LOAD

485.9

273.3

174.9

121.5

89.3

68.3

603.5

339.4

217.2

150.9

110.8

84.9

LIVE LOAD/DEFLECTION

351.1

152.1

77.9

45.1

28.4

19.0

448.9

189.4

97.0

56.1

35.3

23.7

2-SPAN

NEGATIVE WIND LOAD

468.1

263.3

168.5

117.0

86.0

65.8

598.5

336.7

215.5

149.6

109.9

84.2

LIVE LOAD/DEFLECTION

364.4

205.0

131.2

91.1

66.9

45.8

452.6

254.6

162.9

113.1

83.1

57.0

3-SPAN

NEGATIVE WIND LOAD

585.2

329.2

210.7

146.3

107.5

82.3

748.1

420.8

269.3

187.0

137.4

105.2

LIVE LOAD/DEFLECTION

455.6

256.3

147.0

85.0

53.6

35.9

565.7

318.2

183.0

105.9

66.7

44.7

4-SPAN
OR MORE

NEGATIVE WIND LOAD

546.4

307.3

196.7

136.6

100.4

76.8

698.6

392.9

251.5

174.6

128.3

98.2

LIVE LOAD/DEFLECTION

425.4

2393

1531

90.3

56.9

38.1

528.2

2971

190.2

112.4

70.8

47.4
 

 

18 Gauge (Fy = 45 KSI)

  

SPAN
TYPE

LOAD
TYPE

SPAN IN FEET

3.0

4.0

5.0

6.0

7.0

8.0

SIMPLE

NEGATIVE WIND LOAD

829.6

4667

2987

207.4

152.4

116.7

LIVE LOAD/DEFLECTION

644.4

271.9

139.2

80.5

50.7

34.0

2-SPAN

NEGATIVE WIND LOAD

908.6

511.1

3271

227.2

166.9

127.8
LIVE LOAD/DEFLECTION 622.2 350.0 224.0 155.6 114.3 81.9
3-SPAN

 NEGATIVE WIND LOAD

1135.8

6389

408.9

284.0

208.6

159.7

LIVE LOAD/DEFLECTION

777.8

4375

262.7

152.0

95.7

64.1

4-SPAN
OR MORE

NEGATIVE WIND LOAD

1060.5

596.5

381.8

265.1

194.8

149.1

LIVE LOAD/DEFLECTION

726.2

4085

261.4

161.4

101.6

68.1

NOTES

  1. Allowable loads are based on uniform span lengths and Fy of 45 KSI for 22, 20 and 18 gauge.
  2. Live load is allowable live load.
  3. Wind load is allowable wind load and has been increased by 33.333%.
  4. Deflection loads are limited by a maximum deflection ratio of L/240 of span or maximum bending stress from live load.
  5. Weight of the panel has not been deducted from allowable loads.
  6. Load table values do not include web crippling requirements or connection of panel to substrate.
  7. Minimum bearing length of 1.5" required.
  8. See page 19-20 for minimum fastener pattern.

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